Date of Award
12-1-2025
Document Type
Thesis
Degree Name
M.S. in Engineering Science
First Advisor
Yiwei Han
Second Advisor
Shan Jiang
Third Advisor
Tejas Pandya
School
University of Mississippi
Relational Format
dissertation/thesis
Abstract
Micro spherical particles have been widely applied to magnetic-based soft robotic. Due to the high impact speed and conventional substrate, spherical particles are very challenging to be printed. In this study, we integrated Electrohydrodynamic (EHD) printing and mineral oil-based bath materials to develop a novel embedded EHD printing to direct print polydimethylsiloxane-iron (PDMS-Fe) micro-particles with near perfect spherical shape. The comparison between conventional EHD and embedded EHD printing shows that the bath material can enhance the electric field confinement, which significantly lower the required printing voltage. A study has been carried to understand the effect of the two major printing parameters, voltage and pressure, on the feature resolutions. Images from Scanning Electron Microscopy (SEM) confirms the near perfect spherical shape of printed particles after curing, and magnetic tests showed a strong magnetic responsiveness from the printed particles. These findings demonstrated the potential of producing micro spherical composite particles with this novel embedded EHD printing approach, providing an important insight towards manufacturing of soft robotics, adaptive sensors, and targeted microsystems.
Recommended Citation
Ghimire, Prashant, "Development of High Resolution Embedded Electrohydrodynamic (EHD) Printing" (2025). Electronic Theses and Dissertations. 3516.
https://egrove.olemiss.edu/etd/3516
Magnetic-movement testing